Arc-lamp.



PATENTED DEC. 10, 1907.

w. E. DANIELS.

ARC LAMP. APPLICATION FILED DEG-31.1906

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WALTER E. DANIELS, OF CHICAGO, I-LLINOIS.

ARC-LAMP.

Specification of Letters Patent.

- Patented Dec. 10, 1907.

Application filed December 31. 1906. Serial No. 350,202.

To all whom it may concern:

Be it known that I, WALTER E. DANIELS, a citizen of the United States, and resident of Chicago, county of Cook, and State of Illinois, have. invented certain new and useful Improvements in Arc-Lamps, of which the following is a specification and which are illustrated in the accompanying drawings, forming a part thereof.

The invention relates to are lamps, and more particularly to those in which a supporting frame and carbon carrying feed mechanism are inclosed by a housing of transparent or translucent material adapted to protect the parts of the lamp from the weather and insects, and impart to the whole device an ornamental appearance.

The object of the invention is to provide an efficient and inexpensively constructed lamp of this kind; and the invention consists in an improved structure which is exemplified by the device to be hereinafter described and illustrated in the accompanying drawings, in which i Figure 1 is a central vertical section of the support and housing for the lamp, and shows the lamp frame and carbon-carrying feed mechanism in side elevation; Fig. 2 is similar to Fig. 1 but shows the device as viewed from a different direction, the lamp support being in elevation; Fig. 3 is a plan section,.

some of the parts being omitted; and Fig. 4 is a detail side elevation of the device.

Asupport 10 is provided for the lamp, and this preferably takes the form of a tubular column having a capital 11. A base-block 12, of insulating material, as orcelain, and having a central aperture 13, is mounted on the support, being, as shown, secured to the top of the capital by screw-bolts 14.

Standards 15, 16, rise from the insulating baseblock 12 and from these standards the operative part of the lamp, including its frame members, as 17, 18, and the carboncarrying feed mechanism, generally designated 19, is hung. The carbon-carrying feed mechanism of the lamp forms no part of thepresent invention, and that shown in the drawings is of the well-known alternating current lamp in which carbon pencils 20, 21, are mounted within a shade. or globe 22. The globe 22 is hung in a stirrup 23 from a disk 24 of insulating material, and this disk is carried by rods 25, 26, depending from a flange 27 projecting from the base of a central supporting tube 28. One of the carbon pencils, as 20, extends upwardly through the insulating disk 24, and is there engaged by a clutch 29, connected by a link 30 with a lever 31, which is controlled by solenoids 32 carried by brackets '33, 34, from the central tube 28. Preferably a shadeor reflector 35 is secured to the under face ofthe insulating disk 24, for directing the light rays, particularly those emitted from the upper end of the lower carbon pencil 21 downwardly.

The frame members 17, 18, of the lamp preferably comprise the legs of a substantially U-shaped strap 36, which fits over the carbon-carrying feed mechanism 19 and is secured to the upper end of the central tube 28 at 36 and to the insulating disk- 24 at 37, 38. One of the frame members, as 17, however, is insulated from the remainder of the frame and from the mechanism of the lamp, as shown, by forming the cross member of the strap 36 sectional and by connecting the sections of the strap with a block 39 (Fig. 1) of insulating material.

A trunnion 40 is formed on each of the frame members 17 18, and each of the trunnions is journaled in one of the standards 15, 16.

Current is supplied to the mechanism of the lamp through wires 41, 42, preferably leading through the supporting column 10 and each being connected to one of the standards 15, 16, at its-base, while a flexible section of wire 43, of sufficient length to permit the swinging of the lamp on its trunnions, connects that one of the standards, as 15, which engages the trunnion of the insulated frame member 17 and the mechanism of the lamp.,

A glass globe 44, having an opening to permit the insertion of the lamp, provides a housing for the lamp frame and mechanism and for the standards 15,- 16, the mouth of the globe being preferably seated on the capital of the supporting column. As shown, the globe is removably secured in position by clips 45, which engage its rim and are rotata bly mounted in the capital 11, each having a thumb-piece 46 which projects through the wall of the capital to a conveniently accessible position outside of the globe.

In order that the globe 44 may not be of exceptionally large size, the height of the lamp is preferably reduced by permitting the lower portion of the inner globe 22 and carbon pencil 21 to extend through the opening 13 of the base-block 12 into the interior of the capital 11, as is most clearly shown in Fig. 1. To permit the trimming of the lamp, provision is made for raising it when the globe is removed and, as shown, vertically elongated apertures 47 are formed in the standards 15, 16, for receiving the trunnions 40 of the frame members 17, 18.

By means of the invention a lamp having its mechanism entirely protected from the weather and against the entrance of insects is provided, while its form is such that it may be used to advantage in landscape and archi tectural decoration, andit gives a pleasing and efficient distribution of light. In trimming the lamp the globe 44 is removed by releasing the clips 45, and the mechanism of the lamp is raised by sliding the trunnions 40 in their vertically elongated bearings 47 to permit the lamp to be swung to the dotted lines position of Fig. 2.

I claim as my invention- 1. In combination, a support having a capital, a globe mounted on the capital and having an opening over the capital, a standard rising from the capital of thesupport within the globe and an arc lamp carried by the standard.

2. In combination, a tubular support having a capital, a diaphanous globe imperforate except for an opening fitting the capital of the support, a pair of standards rising from the capital of the support within the globe, an arc lamp carried by the standards, and a wire leading through the support to each lamp terminal.

' '3. In combination, a tubular support. having a capital, a diaphanous globe imperforate except for an opening fitting the capital of the support, a pair of insulated standards rising from the standard of the support within the globe, an arc lamp carried by the standards and a Wire leading through the support to the base of each of the standards.

4. An electric arc lamp structure, comprising a column provided at its upper end with a capital, a supporting frame sustained upon the capital of the column, a complete electric are lamp mounted in said supporting frame, and a globe inclosing the arc lamp and its supporting frame and having an opening in its bottom, the bottom open end. of the globe resting upon the capital and being closed thereby.

5. An electric arc lamp structure, comprising a column provided at its upper end with a capital, an insulating disk mounted. upon the capital, a complete electric arc lamp supported upon the insulating disk, and a globe mounted upon the capital and inclosing the electric arc lamp, said. globe having an opening through which the insulating disk projects.

6. In combination, a support having an opening at its top, a standard rising from the support adjacent the opening, an arc lamp, and vertically shiftable swinging connection. between the arc lamp and the standard, the foot of the lamp normally extending into the opening in the support.

7. In combination, a support having an opening at its top, a standard rising from the support adjacent the opening, a removable globe fitting the top of the support and. covering the standard, and an arc lamp of greater length than the height of the globe shiltably mounted on the standard Within the globe, the foot of the lamp normally extending into the opening in the support.

8. In combination, a support having an opening at its top, a standard rising from the support adjacent the opening and having a vertically-elongated bearing for a trunnion, an arc lamp having a frame, and. a trunnion formed 011 the frame of the lamp and. fitting into the bearing in the standard, the foot of the lamp normally extending into the open ing in the support.

7 WALTER E. DANIELS. Witnesses:

CHARLES B. GILLSON, E. M. KLAronEn. 

